Odd question, [url=https://www.youtube.com/watch?v=eLFx99D6l3g]how useful would this be[/url], if you had someone trained in its operation?

Granted, the different FM-Doppler returns ([url=https://www.youtube.com/watch?v=lpUmwznDXOw]in audio[/url]) will likely sound a bit more alien when trying to ID them... but that's what refresher-training is for.
-I'm figuring the hyped field-sensor integration of Future Force Warrior hinged on being able to give such intel to low-level commanders in a timely enough manner that the precision of knowing when there is movement on top of a particular building would be useful to a counter-sniper team; rather than a mortar-battery.

[url=https://www.youtube.com/watch?v=Sl-ptnCUD-k]This is really just an upgraded AN/PPS-15...[/url]
-I'm sure tall-grass and thick forests could hinder its usefulness, though. Which is why it's mostly base-security and used on defoliated sections of land.
-As a tool to use in the assault of a specific small objective, UAVs are likely better.